It tinkers with a lot of different knobs on your creatures, but nothing that's incredibly hard to follow
They were scared of his ability turning Standard into an interminable grind, and to be fair I can certainly imagine an alternate universe where that happened
You now have three colourless mana floating, and can do it again: tap Basalt Monolith to make three more colourless mana, pay three to untap it, copy the ability using two colourless and Rings of Brighthearth, untap Basalt Monolith once, tap it to make three more colourless, and then untap it with the copied ability
They are completely Clean, Mint and Untampered with
With an Inkmoth Nexus in play, you only need to connect with the opponent ten times to poison them out, even less so if you have a pump spell or equipment to power through it